optee: Add CONFIG_OPTEE_TZDRAM_BASE

OPTEE is currently linked to a specific area of memory called the TrustZone
DRAM. This patch adds a CONFIG entry for the default address of TrustZone
DRAM that a board-port can over-ride. The region that U-Boot sets aside for
the OPTEE run-time should be verified before attempting to hand off to the
OPTEE run-time. Each board-port should carefully ensure that the TZDRAM
address specified in the OPTEE build and the TZDRAM address specified in
U-Boot match-up.

Further patches will use TZDRAM address with other defines and variables to
carry out a degree of automated verification in U-Boot prior to trying to
boot an OPTEE image.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc: Harinarayan Bhatta <harinarayan@ti.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Tom Rini <trini@konsulko.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

diff --git a/lib/optee/Kconfig b/lib/optee/Kconfig
index 41c0ab71b19364b7dd080074bda7ce9d675be6b1..a3b733217466142b3fff161ee9bda757626443e8 100644 (file)
--- a/lib/optee/Kconfig
+++ b/lib/optee/Kconfig
@@ -14,3 +14,11 @@ config OPTEE_TZDRAM_SIZE
        help
          The size of pre-allocated Trust Zone DRAM to allocate for the OPTEE
          runtime.
+
+config OPTEE_TZDRAM_BASE
+       hex "Base address of Trust-Zone RAM for the OPTEE image"
+       depends on OPTEE
+       default 0x9d000000
+       help
+         The base address of pre-allocated Trust Zone DRAM for
+         the OPTEE runtime.